Front-end engineer
Jack Knoell builds interfaces. And the systems behind them.
Interfaces
Seven products, shipped. Wealth management, transplant diagnostics, renewable energy, commerce, and a CarPlay app.
Northern Trust
Full-stack financial platform with 50+ reusable React components, Java backend integration, and AEM CMS.
Visit siteCareDx
Corporate website for a leading transplant healthcare company providing diagnostics, pharmacy services, and digital health platforms.
Visit siteVanguard Renewables
High-performance corporate website achieving perfect 100% Lighthouse score with optimized GraphQL data layer.
Visit siteEdenspiekermann
Agency portfolio and marketing website with sub-second global TTFB and zero runtime errors.
Visit siteEyePromise
E-commerce platform for a science-backed eye health company offering supplements and topical products.
Visit siteSelby Lane
Secure financial services client dashboard with JWT authentication and comprehensive portfolio management.
Visit siteDrive Stories
Mobile-first React Native application with CarPlay/Android Auto integration and OpenAI-driven backend services.
App Store
Systems
One person across the stack.
Interfaces, content models, and the APIs underneath.





